Rheumatology International

, Volume 19, Issue 4, pp 123–128

Basic FGF-induced activation of telomerase in rheumatoid synoviocytes

  • H. Tsumuki
  • T. Hasunuma
  • T. Kobata
  • T. Kato
  • A. Uchida
  • K. Nishioka
ORIGINAL ARTICLE

DOI: 10.1007/s002960050115

Cite this article as:
Tsumuki, H., Hasunuma, T., Kobata, T. et al. Rheumatology International (2000) 19: 123. doi:10.1007/s002960050115

Abstract

To investigate the mechanism of persistent proliferation of rheumatoid arthritis (RA) synoviocytes in situ, we examined the activity of telomerase enzyme and the expression of telomerase related factors in cultured synoviocytes. Cultured synoviocytes obtained from patients with rheumatoid arthritis (n=29), osteoarthritis (OA, n=18), and traumatic joint disease (TJD, n=4) were examined. Telomerase activity was detected by TRAP (telomeric repeat amplification protocol) assay, and 12 out of 29 samples of synoviocytes (41%) from RA patients showed a positive telomerase activity, whereas none of the samples from OA and TJD patients showed this activity. Results were confirmed by PCR-ELISA. The telomerase activity was enhanced by basic fibroblast growth factor (bFGF). The mRNA expression of telomerase related factors, such as hTERC, TRF2, and TEP-1, showed no difference between RA and OA synoviocytes. Our results suggest that telomerase is activated in rheumatoid synoviocytes, and that bFGF upregulates the activity of this enzyme in RA synoviocytes.

Key words TelomeraseSynoviocyteRheumatoid arthritisbFGF

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • H. Tsumuki
    • 1
  • T. Hasunuma
    • 1
  • T. Kobata
    • 1
  • T. Kato
    • 1
  • A. Uchida
    • 2
  • K. Nishioka
    • 1
  1. 1.Rheumatology, Immunology, and Genetics Program, Institute of Medical Science, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki 216-8512, Japan e-mail: K4nishi@marianna-u.ac.jp Tel.: +81-44-977-8111 Fax: +81-44-977-9165JP
  2. 2.Department of Orthopedic Surgery, Mie University Faculty of Medicine, 2-174 Edobashi, Tsu 514-8507, JapanJP